#define NUM 8
int a[NUM+1];
main()//唐子豪
{
    int number,i,k,flag,not_finish=1,count=0;
    i=1;
    a[1]=1;
    printf("The possible configuration of 8 queens are:\n");
    while(not_finish){
        while(not_finish&&i<=NUM){
            for(flag=1,k=1,flag&&k<i;k++)
                if(a[k]==a[i]) flag=0;
            for(k=1;flag&&k<i;k++)
                if((a[i]=[k]-(k-i))||(a[i]==a[k]+(k-i))) flag=0;
                    if(!flag){
                        if(a[i]==a[i-1]){
                            i--;
                            if(i>1&&a[i]==NUM)
                                a[i]=1;
                            else if(i==1&&a[i]==NUM)
                                not_finish=0;
                            else a[i]++;

                        }
                        else if(a[i]==NUM) a[i]=1;
                        else a[i]++;
                    }
                    else if(++i<=NUM)
                        if(a[i-1]==NUM) a[i]=1;
                        else a[i]=a[i-1]+1;
        }
        if(not_finish){
            ++count;
            printf((count-1)%3?"[%2d]:":"\n[%2d]:",count);
            for(k=1;k<=NUM;k++)
                printf(" %d",a[k]);
            if(a[NUM-1]<NUM) a[NUM-1]++;
            else a[NUM-1]=1;
            i=NUM-1;
        }
    }
}